The importance of steam trap maintenance

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In steam systems, steam traps are a very important component. During the production process, they prevent steam from escaping, and at the appropriate time, they release condensate and non-condensable gases, thereby maximizing the utilization of thermal energy. They serve as crucial connecting elements in steam and condensate systems. Whether the steam trap is functioning properly has a significant impact on the efficiency of heat exchange equipment and the economical use of energy. A 1” (DN25) thermodynamic steam trap is used for main pipe drainage; if it fails and leaks, losses of ¥52,600 per year will occur (at a steam price of ¥200 per ton). In addition, a clogged steam trap can lead to a decrease in the heat exchange efficiency of the equipment, slow heating of the medium to be heated, and fluctuations in its temperature. In such cases, operators sometimes open the bypass drain of the steam trap, resulting in both steam and condensate being discharged simultaneously, which leads to energy waste and thermal pollution of the environment. To avoid problems such as waste, it is first necessary to identify the faulty steam trap. Currently, the detection of steam trap failures is generally carried out using observation and temperature measurement methods; these two approaches allow for an intuitive assessment of blockages in steam traps. However, when a steam trap is leaking, maintenance personnel need to possess a high level of technical expertise. Based on Vachi’s years of data collection on the operation of steam systems for various customers, the operating conditions of steam traps under different maintenance scenarios are as follows. Maintenance methods for steam traps. Failure rate of steam traps: No monitoring or maintenance – greater than 20%; No monitoring, repair or replacement after failure – 10%-15%; Regular monitoring, repair, and replacement – 2%-5%; Regular monitoring and preventive maintenance – less than 1%